(CNN) - An unapologetic Donald Trump insisted Sunday that he is "the least racist" when pressed as to whether racism motivated his recent focus on President Obama's birth certificate and academic qualifications.

The millionaire-turned-television host spoke with CNN's Don Lemon about the White House Correspondents Dinner and whether a presidential bid was in the offing, before the conversation turned to matters of race and comments made earlier in the day by CBS' "Face the Nation" host Bob Schieffer.

NEW YORK (CNNMoney) - When lawmakers return to Washington on Monday, the debate over raising the nation's debt ceiling will kick into hyperdrive.

That's because Congress is now staring down a series of deadlines to raise the country's legal borrowing limit. First up: May 16, Treasury's latest estimate as to when U.S. debt will hit the country's $14.294 trillion ceiling.

KENNEDY SPACE CENTER, Florida (CNN) - A plan to launch the space shuttle Endeavour on Monday has been scrubbed, and a new launch likely will not come before the end of the week at the earliest, officials said Sunday.

Endeavour's final launch was delayed by at least 72 hours Friday because of concerns about the shuttle's heating system. Monday was the earliest possible liftoff date following the delay.

Washington (CNN) - Republican Sen. Marco Rubio ruled out appearing on the Republican presidential ticket in 2012 in the number one or number two spot, under any circumstances.

"I won't consider it. I don't want to be vice president of the United States. I want to be a senator," Rubio said Sunday on NBC's "Meet the Press." "I'm not going to be on a ticket in 2012 … under no circumstances."FULL POST

Rep. Chris Van Hollen (D) Maryland, on CNN’s “State of the Union”
“Oil prices are set on the international market and there’s absolutely no justification to ask American taxpayers to provide these big subsidies and windfall profits to these oil companies w hen they are already making record profits. What the president has said, let’s not invest that in giving it to oil companies, let’s invest in our nation’s future energy supply. I would say with respect to price, we’ve seen a supply disruption as a result of Libya, which has helped feed a speculative bubble and the only way to address that in the very short term is to consider releasing some of the oil from the strategic petroleum reserve.”FULL POST

Washington (CNN) - Donald Trump reacted to the onslaught of jokes about him by President Barack Obama and comedian Seth Meyers at the White House Correspondents Association Dinner Saturday with his own view of the events.

“You get to a certain level and you rise to a certain level, let’s say in this case in the polls and boy, does the world come after you,” Trump, a potential 2012 candidate, said on "Fox and Friends" Sunday.FULL POST

Washington (CNN) - The so-called "birther" controversy championed by Donald Trump may have been largely put to rest this week with the release President Barack Obama's long-form birth certificate, but the real estate mogul's name remained on the tips of Washington tongues Sunday.

Former White House adviser David Axelrod criticized the media's continued trumpeting of the story, while conservative Republican Sens. John McCain of Arizona and Lindsey Graham of South Carolina seemed to dismiss Trump's 2012 presidential ambitions.FULL POST

Washington (CNN) - A leading House conservative on Sunday qualified her support for a Republican budget proposal that would overhaul Medicare, saying she was concerned it could hurt senior citizens.

The comments by Rep. Michele Bachmann, a Tea Party favorite from Minnesota, showed the impact of public opposition to the Medicare provision of the budget plan that also calls for deep non-military spending cuts and reforming the tax code to lower rates while eliminating loopholes.

“I would say with respect to price, we’ve seen a supply disruption as a result of Libya, which has helped feed a speculative bubble and the only way to address that in the very short-term is to consider releasing some of the oil from the strategic petroleum reserve,” Van Hollen said Sunday on CNN’s “State of the Union.”FULL POST